Sharp AM-300 (serv.man7) Service Manual ▷ View online
AM-300DE
3 – 17
9. Timing chart
9.1. Print process
9.2. Cleaning process
Pre-Printing period
Printing period
After Printing period
Signal
Name
Name
max 5.0sec
One or more page printing
3.0sec
DC
AC
DC
5sec
2sec
5sec
Lighting
Printing
Lighting
DC(-950V)+AC(760Vp-p)
DC(+3600V)+AC(760Vp-p)
DC(-500V)
DC(+400V)
DC(-280V)
1
CLEANING
PRINTING
CLEANING
PRINT PROCESS
PMD
(Polygon motor)
MM
(Main motor)
(Polygon motor)
MM
(Main motor)
MCON
Signal
Signal
MC
(Main charger)
(Main charger)
PWMSIN
Signal
Signal
MC
(Superposing)
(Duty)
(Duty)
TCON
Signal
Signal
TC (Transfer
Charger)
Charger)
SV
(Supply Roller
Voltage)
(Supply Roller
Voltage)
Laser Lighting
(discharge)
(discharge)
MC Output
MC
(Main charger)
(Main charger)
GND
Voltage MC
TC Output
TC (Transfer
Charger)
Voltage TC(+)
Charger)
Voltage TC(+)
GND
Voltage TC(-)
SV Output
SV (Supply
Roller Voltage)
Voltage SV(+)
Roller Voltage)
Voltage SV(+)
GND
Voltage SV(-)
Soft Control
High Voltage
Power Supply Unit
CLEANING PROCESS
max 5.0sec
3.0sec
PMD
(Polygon motor)
MM
(Main motor)
(Polygon motor)
MM
(Main motor)
MCON
Signal
Signal
MC
(Main charger)
(Main charger)
DC
PWMSIN
Signal
Signal
MC
(Superposing)
(Duty)
(Duty)
7sec
TCON
Signal
Signal
TC (Transfer
Charger)
Charger)
SV
(Supply Roller
Voltage)
(Supply Roller
Voltage)
Laser Lighting
(discharge)
(discharge)
Lighting
MC Output
MC
(Main charger)
(Main charger)
GND
Voltage MC
DC(-850V)
TC Output
TC (Transfer
Charger)
Voltage TC(+)
Charger)
Voltage TC(+)
GND
Voltage TC(-)
DC(-500V)
SV Output
SV (Supply
Roller Voltage)
Voltage SV(+)
Roller Voltage)
Voltage SV(+)
DC(+400V)
GND
Voltage SV(-)
CLEANING
Soft Control
High Voltage
Power Supply Unit
AM-300DE
3 – 18
[2] Disassembly and assembly procedures
• This chapter mainly describes the disassembly procedures. For the assembly procedures, reverse the disassembly procedures.
• Easy and simple disassembly/assembly procedures of some parts and units are omitted. For disassembly and assembly of such parts and units,
refer to the Parts List.
• The numbers in the illustration, the parts list and the flowchart in a same section are common to each other.
• To assure reliability of the product, the disassembly and the assembly procedures should be performed carefully and deliberately.
1. Rear cover
Fig.1
Parts list (Fig. 1)
1
Mechanism unit
1
2
Screw (3x10)
5
4
Rear cover
1
No.
Part name
Qty
3
Hook
4
1
Mechanism unit
Rear cover
2
2
2
2
2
4
3
3
3
3
AM-300DE
3 – 19
2. PWB unit and PWB plate
Fig.2
Parts list (Fig. 2)
12
Screw (3x10)
4
13
Screw
1
14
AC cord earth cable
1
15
Screw (3x8)
1
No.
Part name
Qty
No.
Part name
Qty
1
Mechanism unit
2
Connector
22
4
Screw (3x10)
1
5
Control PWB unit
1
11
High voltage PWB unit
1
1
3
Screw (3x8)
3
1
Mechanism unit
19
12
12
12
17
18
16
15
13
14
11
10
High voltage
PWB unit
PWB plate
Power supply
PWB unit
Control
PWB unit
9
7
6
7
2
8
5
2
2
2
2
3
3
2
6
Connector
4
8
Power supply PWB unit
1
9
Screw (3x8)
4
7
Screw (3x8)
2
16
Earth cable
1
17
Screw (3x6)
1
18
Earth cable
1
19
PWB plate
1
10
Earth cable
1
4
AM-300DE
3 – 20
3. Flatbed unit
Fig.3
Parts list (Fig. 3)
No.
Part name
Qty
1
Mechanism unit
2
Screw (4x12)
5
1
3
Flatbed unit
1
2
2
2
2
2
1
3
Mechanism unit
Flatbed unit
2. Front cover open
1. Right cover open
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